FlowViz
Free, private, instant-preview Mermaid diagram editor.
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Gopan Kombiyil

FlowViz - Free, private, instant-preview Mermaid diagram editor.

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Create Mermaid diagrams online for free. FlowViz is a private, live editor with instant preview and clean SVG exports. No login or signup required.

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Gopan Kombiyil
Maker
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Hey Product Hunt! 👋 I'm excited to share FlowViz. I built this because I wanted a lightning-fast way to write and preview Mermaid diagrams without logging into a heavy enterprise tool or paying a subscription. FlowViz is designed for speed and privacy: 🔒 Fully Private: Zero backend. Everything renders in your browser. ⚡️ Instant Preview: No "render" buttons. It updates live as you type. 🎨 Clean Export: Download crisp SVGs for your docs or slides instantly. It's 100% free with no signup required. Give it a try and let me know what you think! I'd love to hear your feedback on the UI or any new features you'd like to see.